I am installing an outdoor heater that is 3000 watt, 12.5 amp, 240 v. What size breaker and wire should be used?

  • Is it labeled 12.5 amps, or are you just assuming that from 3000W? What do the instructions say to use? – Harper - Reinstate Monica Oct 7 '20 at 4:04

To just answer your question, You will need #12 AWG wire which is good for 20 Amps and a 20 Amp breaker. If you add more information about the location and the heater, we might be able to help out with the installation.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.